Case Studies

Synchronizing over a Wide Sampling Speed Range

The client has set up an experiment where he needs to generate a stimulus signal and apply it to a He-Ne Laser with some polarizing optics. The response signal is a measurement of the Faraday effect. The signal is noisy and requires averaging over a very long time. The stimulus and response must be synchronized over a wide frequency range. For synchronization, the application requires a wide band of sampling speed from, 1 KS/s to 50 MS/s.

GAGE'S SOLUTION

While Gage's CompuScope 14100 provides the required digitizer performance, it cannot be externally clocked down to the required 1 kHz. Fortunately, the client had a third party synthesized frequency generator, which can be synchronized with a fixed 10 MHz TTL clock. 

Upon consulting with Gage engineers, it was determined that the CS14100 card has a fixed 50 MHz reference clock, which was accessible. Gage Applied agreed to offer a special modification where the 50 MHz signal is divided by 5 and buffered in order to supply a 10 MHz TTL signal. This signal can then be used to drive the synthesized frequency generator. In this way, rather than the client's setup externally clocking the CS14100, the CS14100 provides the master clock source to which the entire experiment is slaved.

The special clock modification required special engineering charges that the client was pleased to provide for a timely and fitting solution. Because design, manufacturing and sales are located together in the Gage Montreal facility, the Applications Engineering department is able to quickly tap into the technical resources required to specify an acceptable customized solution. The solution offered by Gage enables the customer to integrate his application and compute the required averages in an easy and efficient manner. 

PRODUCT RECOMMENDED

CompuScope 14100 - 1M
Special clock-out modification

This application note is provided "as is" without any warranties of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. Gage Applied Technologies further does not warrant the accuracy and completeness of the material contained herein. Gage Applied Technologies may make changes to this material, or to the products described in it, at any time without notice.

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